Improvement in feed-regulators for middlings-separators



A. G. MOWBRAY. Improvement in Feed-Regulators for Middling-Separa tors.

- ,-GNO.131,625.. Patented Sep.24,1872,v

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TATES PATENT OFFICE.

ALFRED Gr. MOWBRAY, OF STOCKTON, MINNESOTA.

Specification forming part of Letters Patent N 0. 131,625, datedSeptember 24, 1872.

To all whom t't may concern:

Be it known that I, ALFRED G. MOWBRAY, of Stockton, in the county ofWinona and State of Minnesota, have invented a new and ImprovedMiddlings-Separator, of which the following is a specification:

Figure 1 represents a vertical longitudinal section of my improvedmiddlings-separator. Fig. 2 is a horizontal section of the same.

Similar letters of reference indicate corresponding parts.

This invention relates to an improved ap paratus for separatingmiddl'ings from bran and consists in the construction and arrangement ofcertain parts hereinafter claimed, and which I will proceed to describein connection with other parts necessary to form a complete or operativemachine.

A in the drawing represents the stationary supportingframe of myimproved separator. B B are the upright posts of the movable frame, inwhich five, more or less, sieves, O O, are secured. Each of these sievesis inclined, and all are nearly or entirely parallel with each other, asshown, and are secured at one side to the uprights B B by bolts 0!. a,which pass through the pendent sides b b of the sieves, while theirother lower ends rest on bolts 61 d, as is clearly indicated in Fig. 1.The sieves can be more or less inclined by letting the bolts d move downor up in the slots, through which they pass in the uprights. While beingthus regulated as to inclination the sieves swing on the bolts a. Undereach sieve is a plate, D, inclined in an opposite direction to thesieve, and terminating before reaching the sieve below, except thelowermost plate D, which may be extended, as shown, to constitute thefinal discharge-spout e for the middlings. By a rod, f, connecting withone of the plates D, the frame B with its sieves is subjected to theaction of an eccentric, g, mounted on a shaft, E, that hangs on theframe A. When the shaft E is rapidly revolved the sieves are all movedback and forth to shake the material on them and cause the desiredseparation of coarse from fine matter. Springs F, connecting with theuprights B at opposite sides of the sieves, tend to balance the movingframe and hold it suspended from the top of the frameA, and aid inmaking the shaking motion sudden. The hopper G,- in which the middlingsare placed to be delivered to the sieves, has a bottom formed by arevolving shaft, H. J is a bar hinged to the frame A at i, and restingat its free end against the inclined or wedge-shaped" block 71. attachedto the side I of the hopper, which is hinged at j. This free end of saidbar being vertically adjustable, the width of the opening between theside I and the roller H may be easily controlled, so as tocorrespondingly regulate the delivery of the material to be screened orseparated.

It will be understood that the weight of the material in the hopperserves to hold the side I open sufficiently to allow the escape of themiddlings, and when no more remains in the hopper the bar J will closethe side I.

Having thus described my invention, I claim as new and desire to secureby Letters Patcut- The combination of the hinged bar J with the hingedside I h of the hopper, as shown and described.

ALFRED G. MOWBRAY. Witnesses:

JAMES H. LooKE, H. W. MOWBRAY.

